Thill-coupling.



No. 739,500.r Y

. lUNITED STATES WILLIAM s. MARSHALL, or wirsrormsrna, PENNSYLVANIA, AssIGNoR or' Patented September 22, 1903.6'

' PATENT gOFFICE,

ONE-HALF TO GEORGE J. MOSES, OF WESTCHESTER, PENNSYLVANIA. Y

SPECIFICATION Vforming part of Letters Patent 120.739,500, dated September 22, 1903.

- Appiimion nea october 21, 1902.` serial No. 128,112. (No model.)

. T @ZZ whom it may con/cern;

Be it known that I, WILLIAM S. MARSHALL, a citizen of the United States,residing at Westchester, Chester county, Pennsylvania, have invented certain ImprovementsinThill-Oouplings, of which the following is a specifi-cation.

My invention consists of certain improvements in that form of thill-couplings in which the coupling and securing means are carried directly by the bolt, which passes through the ears or ,clips of the shackleand the thill-eye.

My invention is fully illustrated in the accompanying drawings, in which-'- Figure 1 is a perspective view of my improved form of thill-coupling. Fig. 2 is a sectional View taken on theline a a, Fig. 1; and Fig. 3 is a perspective view'of the bolt, showing a detail of my invention. y

In Fig. 1, 1 represents the laxle and cappiece, to which is attached in the usualmanner the shackle 2, carrying the ears or clips 3, between which ears or clips the thill-eye 11 is held. To secure'these parts in position, a bolt 5 is employed, which boltis provided with an eye 6 at one end, andpivoted to this end by means of the -pin 7, which passes through said eye, is a bracket 8. This bracket has a depending cup-like portion9, lprovided with a recess 10 to receive a plunger 11, having a concaved head 12, adapted to engage the under face of the thill-eye, as clearly shown in Fig. 2, being upheld by a spring 13. This plunger is hollow to containsaid spring,

and to prevent the dislodgement of the plun-A ger when the coupling is released a screw 14 is employed, which passes through the shell of the depending portion 9 and enters a slot 15 in the shell of the plunger.

At the opposite end of the bracket 8 a lever 16 is pivoted at 17, and this lever carries a yoke 18, pivoted at 19 and adapted to engage the end of the bolt. j The -bolt is notched at 20, and this notch has a cam-face 21. The yoke isalso provided with a cam-face 22 to engage the cam-face of the bolt-notch, and when these parts are in the locked position, as shown in Figs.41 and 2, the cam-face of the yoke acts on the cam-face of the bolt-notch and tends to draw said bolt up, so as to make 53 a tight iit. The movement of the lever to lock the parts in place brings the yoke-pivot in advance of the lever `pivot,so that said lever is thereby retained, and to lock the lever in this position the end of 'the vsame is extended and forms a spring-arm 25, with a projection 26, adapted to engage a recess 27,

formed in the under surface of the cup-like end ofthe same, adapted to enter a recess 29, l

formedv in one of the ears or clips of the shackle. This projection is made tapering V-shaped, so that the recess with which it engages .may be formedwith an ordinary three-v cornered le.

Having thus described my invention, I claim and desire to secure by Letters Patent-' l. vIn a thill-coupling, the combination of the shackle and thill-eye, a bolt connectingl the same, a bracket carried by the bolt, a plunger carried by'nsaivd bracket and adapted to engage the thill-eye, a yoke adapted to engagethe end of the bolt, and a'leverpivoted to the bracket and carrying said yoke, said lever adaptedl to lock the yoke to the bolt and thereby hold the plunger to the thill-eye.

2. In a thill-coupling, thecombination of the shackle and thill-eye, a bolt connecting the same, a bracket carried by the bolt, and

the thill-eye, a spring. interposed betweensaid plunger and the cup-like portion of the bracket, a pivoted yoke engaging the end of the bolt, and a lever pivoted to the bracket and carrying the yoke, said lever adapted to look the yoke to the bolt, and thereby hold the plunger to the chill-eye.

v3. In a th-ili-coupling, the combinatim-:Lk of the shackle and thill-eye, a bolt connecting the same, a bracket'carried by the bolt, and

having a cup-like portion, a plunger arranged within said cup-like portion, said plunger having a concaved portion adapted to engage the thilleye, a spring interposed between said plunger and the cup-like portion of the bracket, a pivoted yoke engaging the end of the bolt, the latter being notched and hav- IOO ing a cam-surface,and the yoke havingI a carnsurface to engage the cam-surface of the bolt, and a lever pivoted to the bracket and carrying the yoke, said lever adapted to lock the yoke to the bolt and thereby hold the plunger tothe thill-eye and draw the parts of the coupling tightly in place.

4E. In a thill-coupling, the combination of the shackle and thill-eye, a bolt connecting the same and carrying the coupling connection,said coupling havngclips or ears through which the bolt is passed, and a tapering V- shaped projection carried by the bolt at its pivotal end, one of the ears of the shackle having a similarly-shaped recess for the reception of the projection carried by the bolt.

5. In a thill-conpling, the combination of the shackle and 'chill-eye, a bolt connecting WM. S. MARSHALL.

Witnesses:

GEO. J. Mosns, MARY E. RUPERT. 

